Cellulitis with Abscess

Staphylococcus aureus is the most likely pathogen

Drain the pus – send large volume tissue or fluid (not swab) for culture.

A simple abscess or furuncle may be treated with incision and drainage only, without antibiotics.

Hot compresses may encourage drainage.

Surrounding cellulitis

Immunosuppression, DM

Lack of response to drainage alone

Unable to completely drain